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50.0 mL of water are placed in a calorimeter. When 15.0 g of iceare added to the calorimeter, the temperature drops from 70.0 C to51.2 C. Calculate the heat of fusion of ice in kJ/g, and inkJ/mol
175 L of liquid nitrogen (density .808 g/ml) vaporizes into gaseous nitrogen (density 1.15g/L) in a room of size 10m x 10m x 2.5m. What maximum fraction of the air in the room could be displaced by the gaseous nitrogen
what amount of HCl in grams is needed to react with .676 g Al(OH)3
The combustion of one mole of propane, C3H8, releases 531 kcal. How much heat is released by the combustion of 1.20 moles of propane?
For the reaction 3 C2H2=C6H6 at 25c the standard enthalpy change is -631 kJ and the standard entropy change is -430 J/K
The molarity of the potassium dichromate is a result of two sequential dilutions. Re- member that you can obtain the dilution factor from the volumes in the dilutions, V2/V1.
find the of X-281, you prepare a 0.075 test solution of X-281. The pH of the solution is determined to be 3.00. What is the of X-281?
You are given a stock concentration of alcohol dehydrogenase (ADH). The molecular weight of ADH is 35,000 g/mol. What is the molarity of a 35 mg/mL stock solution of ADH
calculate the mass of sodium nitrate, NaNO3, required to produce 7.00g of oxygen according to the following reaction:
The addition of chlorine gas to magnesium bromide will it cause a reaction and if so what will the product be
The moles of salicylic acid is 0.00724mol. The molar mass is 138.12 salicylic acid . Given 1.00 g of salicylic acid . Please show work? m=mol of solute X particles per formation/ mass of solvent, kg
What will happen to the acetate concentration in equilibrium, [HC2H3O2]-> [H^+]+[C2H3O2^-], when sodium acetate is added
A piece of gold foil has a volume of 0.645cm^3. If the piece of gold measure 10.0 cm by 12.5cm, what is the thickness of the foil
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